An improved manual steel sliding door

By introducing sealing strips, sealing components, rollers, and anti-sway devices into manual steel sliding doors, the problem of insufficient sealing performance is solved, achieving better sealing and sound insulation effects, improving environmental cleanliness and quietness, and making them suitable for high-requirement locations.

CN224282373UActive Publication Date: 2026-05-26SHANGHAI DAOSHENG DOOR IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI DAOSHENG DOOR IND CO LTD
Filing Date
2025-05-07
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Traditional manual steel sliding doors have shortcomings in sealing performance, making it difficult to effectively block the intrusion of dust, rainwater, and noise, affecting the cleanliness and quietness of the environment, especially in places with high environmental requirements such as electronic equipment manufacturing workshops and hospital operating rooms.

Method used

The design incorporates structural improvements such as sealing strips, sealing components, rollers, and anti-sway devices, including the design of electric push rods and sealing brushes, to enhance the sealing performance between the door leaf and the door frame. Furthermore, the stainless steel frame and sound insulation cotton are used to improve stability and sound insulation.

Benefits of technology

It significantly improves the sealing performance of manual steel sliding doors, blocking dust, rain and noise, providing a clean and quiet indoor environment, ensuring smooth door movement and safe locking, and meeting the needs of high-environmental-requirement usage environments.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224282373U_ABST
Patent Text Reader

Abstract

This application relates to the field of sliding door technology and discloses an improved manual steel sliding door, including a support frame fixed to a wall, a steel guide rail, a steel door leaf, and a steel door frame located below. The steel door frame is fixedly installed at the bottom of the support frame, and the steel guide rail is detachably installed and fixed at the bottom of the support frame. The top of the steel door leaf is slidably connected to the steel guide rail. Sealing strips are installed and fixed on the sides of the steel door leaf and the steel door frame that are close to each other. A sealing component is provided at the bottom of the steel door leaf to seal the gap between the steel door leaf and the ground. This application has the following advantages and effects: it can significantly improve the sealing performance of manual steel sliding doors, effectively block dust, rainwater, and noise, provide a cleaner, quieter, and more comfortable indoor environment, and meet the needs of places with high environmental requirements.
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Description

Technical Field

[0001] This application relates to the field of sliding door technology, and in particular to an improved manual steel sliding door. Background Technology

[0002] Today, manual steel sliding doors are widely used in industrial plants, warehouses, commercial shops, and some civil buildings with high security requirements due to their sturdiness, durability, fire resistance, and burglarproof features.

[0003] In related technologies, traditional manual steel sliding doors have shortcomings in sealing performance: the gap between the door and the frame is relatively large, making it difficult to effectively block the intrusion of dust, rainwater, and noise. This can cause significant problems in places with high requirements for environmental cleanliness and quietness, such as electronic equipment manufacturing workshops and hospital operating rooms. Dust entry may affect the normal operation of equipment, rainwater leakage may damage indoor items, and noise interference is detrimental to medical and other work.

[0004] Therefore, we propose an improved manual steel sliding door to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide an improved manual steel sliding door that significantly enhances the sealing performance of the manual steel sliding door, effectively blocking dust, rainwater and noise, and providing a cleaner, quieter and more comfortable indoor environment.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: an improved manual steel sliding door, comprising a support frame fixed to a wall and a steel guide rail, a steel door leaf, and a steel door frame disposed below. The steel door frame is fixedly installed at the bottom of the support frame, the steel guide rail is detachably installed and fixed at the bottom of the support frame, the top of the steel door leaf is slidably connected to the steel guide rail, a sealing strip is fixedly installed on the side of the steel door leaf near the steel door frame, and a sealing assembly is provided at the bottom of the steel door leaf. The sealing assembly is used to seal the gap between the steel door leaf and the ground. The sealing assembly includes an electric push rod and a sealing brush. The electric push rod is fixedly installed at the bottom of the steel door leaf, and the sealing brush is detachably installed and fixed at the output shaft end of the electric push rod.

[0007] A further feature of this application is that a box cover is fixedly installed on one side of the support frame, and a steel guide rail is located inside the box cover.

[0008] A further provision of this application is that a bolt lock is fixedly installed on the front side of the steel door leaf, a knob is installed on the bolt lock, and a latch is fixedly installed on one side of the bottom of the steel guide rail, the latch being compatible with the bolt lock.

[0009] A further feature of this application is that a hanging wheel is slidably installed inside the steel guide rail, the bottom of the hanging wheel extends outside the steel guide rail and is fixedly installed with a connecting seat, and the connecting seat is detachably and fixedly connected to the top of the steel door leaf.

[0010] A further feature of this application is that an anti-sway device is detachably and fixedly installed at the bottom of the steel door leaf.

[0011] A further feature of this application is that a sealing groove is provided on the side of the steel door leaf and the steel door frame that are close to each other, and the sealing strip is embedded in the sealing groove on the steel door leaf by means of sealant.

[0012] A further provision of this application is that the steel door leaf includes a frame, an outer panel, an inner panel, and sound insulation cotton, with the outer panel and the inner panel respectively fixedly installed on the outer walls of both sides of the frame, and the sound insulation cotton filled and fixed between the frame, the outer panel, and the inner panel.

[0013] A further provision of this application is that the frame, outer panel, and inner panel are all made of stainless steel.

[0014] This application includes at least one of the following beneficial technical effects:

[0015] 1. This application, through the synergistic effect of sealing strips, sealing components, and sound insulation cotton, can significantly improve the sealing performance of manual steel sliding doors, effectively blocking dust, rainwater, and noise, providing a cleaner, quieter, and more comfortable indoor environment, and meeting the usage needs of places with high environmental requirements, such as hospitals, laboratories, and precision instrument production workshops.

[0016] 2. This application ensures that the steel door leaf 1 remains stable and smooth during sliding by means of the synergistic action of the hanging wheel, steel guide rail and anti-sway device, avoiding wobbling and deviation, and improving the stability and reliability of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main view structure of this embodiment.

[0018] Figure 2 This is a side sectional view of the structure in this embodiment.

[0019] Figure 3 This is a top-view sectional structural diagram of a steel door leaf.

[0020] Figure 4 This is a schematic diagram of the main structure of the sealing assembly.

[0021] In the diagram, 1. Steel door leaf; 2. Lathe lock; 3. Knob; 4. Steel door frame; 5. Lock; 6. Hanging wheel; 7. Support frame; 8. Steel guide rail; 9. Cover; 10. Anti-sway device; 11. Sealing strip; 12. Frame; 13. Outer panel; 14. Inner panel; 15. Sound insulation cotton; 16. Sealing assembly; 161. Electric push rod; 162. Sealing brush. Detailed Implementation

[0022] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] See Figure 1 , Figure 2 , Figure 3 and Figure 4This application provides an improved manual steel sliding door, including a support frame 7 fixed to a wall, a steel guide rail 8, a steel door leaf 1, and a steel door frame 4 disposed below. The steel door frame 4 is fixedly installed at the bottom of the support frame 7, and the steel guide rail 8 is detachably installed and fixed at the bottom of the support frame 7. The steel guide rail 8 adopts a segmented design, so when a section of the steel guide rail 8 is damaged, the damaged section can be replaced individually without replacing the entire steel guide rail 8, reducing maintenance costs and time. A cover 9 is fixedly installed on one side of the support frame 7. The guide rail 8 is located inside the enclosure 9. The top of the steel door leaf 1 is slidably connected to the steel guide rail 8. A sealing strip 11 is installed and fixed on the side of the steel door leaf 1 closest to the steel door frame 4. The sealing strip 11 is made of EPDM rubber, which has good elasticity, aging resistance and waterproof performance. The cross-sectional shape of the sealing strip 11 is designed with a multi-lip sealing structure. When the steel door leaf 1 is closed, the sealing lips of the sealing strip 11 are tightly fitted to the steel door frame 4, forming multiple sealing lines to effectively block the intrusion of dust, rainwater and noise. A sealing assembly is set at the bottom of the steel door leaf 1. Component 16, the sealing assembly 16, is used to seal the gap between the steel door leaf 1 and the ground. The sealing assembly 16 includes an electric push rod 161 and a sealing brush 162. The electric push rod 161 is fixedly installed at the bottom of the steel door leaf 1, and the sealing brush 162 is detachably installed and fixed at the output shaft end of the electric push rod 161. The electric push rod 161 can control the vertical raising and lowering of the sealing brush 162. When the steel door leaf 1 is closed, the sealing brush 162 is controlled to descend to make close contact with the ground, further enhancing the sealing performance between the steel door leaf 1 and the ground and preventing dust. Foreign objects enter from the bottom of the steel door leaf 1; when the steel door leaf 1 is opened, the control sealing brush 162 rises, which can prevent the sealing brush 162 from being damaged by friction with the ground, thus extending the service life of the sealing brush 162. It should be noted that the electric push rod 161 can be purchased on the market or customized in the factory. A control switch is installed at a suitable position on the wall next to the steel door frame 4. The electric push rod 161 is electrically connected to the control switch. Its wiring connection method and control method are mature technologies in this field and have been fully disclosed, so they will not be described in detail here.

[0024] In this embodiment, a bolt lock 2 is fixedly installed on the front side of the steel door leaf 1, and a knob 3 is installed on the bolt lock 2. A latch 5 is fixedly installed on one side of the bottom of the steel guide rail 8. The latch 5 is compatible with the bolt lock 2. The design of the latch 5 and the bolt lock 2 allows the knob 3 to be rotated to lock the door leaf 1 after it is closed.

[0025] In this embodiment, a hanging wheel 6 is slidably installed inside the steel guide rail 8. The bottom of the hanging wheel 6 extends outside the steel guide rail 8 and is fixedly installed with a connecting seat. The connecting seat is detachably and fixedly connected to the top of the steel door leaf 1, making the movement of the steel door leaf 1 smoother. A detachable anti-sway device 10 is fixedly installed at the bottom of the steel door leaf 1 to ensure that the movement of the steel door leaf 1 is stable.

[0026] In this embodiment, sealing grooves are provided on the sides of the steel door leaf 1 and the steel door frame 4 that are close to each other. The sealing strip 11 is embedded into the sealing groove on the steel door leaf 1 by adhesive. The design of the sealing groove makes the installation of the sealing strip 11 more secure. After the door is closed, one side of the sealing strip 11 is tightly inserted into the sealing groove on the steel door frame 4, which can ensure the durability of the sealing effect.

[0027] In this embodiment, the steel door leaf 1 includes a frame 12, an outer panel 13, an inner panel 14, and sound insulation cotton 15. The outer panel 13 and the inner panel 14 are respectively fixedly installed on the outer walls of both sides of the frame 12. The sound insulation cotton 15 is filled and fixed between the frame 12, the outer panel 13, and the inner panel 14. The frame 12, the outer panel 13, and the inner panel 14 are all made of stainless steel. The surfaces of the outer panel 13 and the inner panel 14 can be treated with various decorative processes, such as fluorocarbon spraying, wood grain transfer, and stainless steel brushing, which can be selected according to different architectural styles and user needs. Among them, the fluorocarbon spraying process can give the surface of the steel door leaf 1 rich colors and good weather resistance, and it is not easy to fade over a long period of use. The wood grain transfer technology can treat the surface of the steel door leaf 1 to a realistic wood texture effect, increasing the natural beauty of the door and making it suitable for places that pursue a natural style. The stainless steel brushing process gives the surface of the steel door leaf 1 a simple and modern metallic texture, which is suitable for modern minimalist style buildings. The design of the sound insulation cotton 15 enhances the sound insulation performance of the steel door leaf 1.

[0028] In this embodiment, it should be noted that the detachable installation and fixing described herein all adopt the existing bolt assembly and fixing method, thereby enabling the disassembly, replacement or repair of components such as steel guide rail 8, sealing brush 162, steel door leaf 1, and anti-sway device 10.

[0029] With the above structure, the improved manual steel sliding door provided in this application can ensure that the steel door 1 moves smoothly and steadily in the horizontal direction by using the sliding of the hanging wheel 6 in the steel guide rail 8 during the process of pushing the steel door leaf 1 to move, thereby realizing the opening and closing of the steel door leaf 1. The anti-sway device 10 can limit the swing of the steel door leaf 1, further ensuring that the steel door leaf 1 remains stable during the sliding process, avoiding swaying, deviation and other situations, thereby improving the stability and reliability of use.

[0030] After the steel door leaf 1 is closed, turn the knob 3 on the latch 2. The latch 2 and the latch 5 on the bottom side of the steel guide rail 8 will cooperate to lock and fix the steel door leaf 1, preventing the steel door leaf 1 from being opened accidentally and ensuring safety.

[0031] When the steel door leaf 1 is closed, the sealing lip of the sealing strip 11 fits tightly against the sealing groove on the steel door frame 4, forming multiple sealing lines to effectively block the intrusion of dust, rainwater, and noise. At the same time, the sealing component 16 at the bottom of the steel door leaf 1 provides a supplementary sealing effect. When the steel door leaf 1 is closed, the electric push rod 161 is extended by controlling its operation. The output shaft of the electric push rod 161 pushes the sealing brush 162 down until it makes close contact with the ground, thus sealing the gap between the steel door leaf 1 and the ground and preventing dust and foreign objects from entering from the bottom. When it is necessary to open the steel door leaf 1, the electric push rod 161 is retracted and reset, causing the sealing brush 162 to rise, which avoids friction with the ground and extends the service life of the sealing brush 162.

Claims

1. An improved manual steel sliding door, characterized in that, The system includes a support frame (7) fixed to the wall, a steel guide rail (8), a steel door leaf (1), and a steel door frame (4) located below. The steel door frame (4) is fixedly installed at the bottom of the support frame (7). The steel guide rail (8) is detachably installed at the bottom of the support frame (7). The top of the steel door leaf (1) is slidably connected to the steel guide rail (8). Sealant is installed and fixed on the side of the steel door leaf (1) near the steel door frame (4). (11) A sealing assembly (16) is provided at the bottom of the steel door leaf (1). The sealing assembly (16) is used to seal the gap between the steel door leaf (1) and the ground. The sealing assembly (16) includes an electric push rod (161) and a sealing brush (162). The electric push rod (161) is fixedly installed at the bottom of the steel door leaf (1). The sealing brush (162) is detachably installed and fixed at the output shaft end of the electric push rod (161).

2. The improved manual steel sliding door according to claim 1, characterized in that: A box cover (9) is fixedly installed on one side of the support frame (7), and the steel guide rail (8) is located inside the box cover (9).

3. The improved manual steel sliding door according to claim 1, characterized in that: A mortise lock (2) is fixedly installed on the front side of the steel door leaf (1), and a knob (3) is installed on the mortise lock (2). A latch (5) is fixedly installed on one side of the bottom of the steel guide rail (8), and the latch (5) is compatible with the mortise lock (2).

4. The improved manual steel sliding door according to claim 1, characterized in that: A hanging wheel (6) is slidably installed inside the steel guide rail (8). The bottom of the hanging wheel (6) extends to the outside of the steel guide rail (8) and is fixedly installed with a connecting seat. The connecting seat is detachably fixedly connected to the top of the steel door leaf (1).

5. The improved manual steel sliding door according to claim 1, characterized in that: The bottom of the steel door leaf (1) is detachably fixed with an anti-sway device (10).

6. The improved manual steel sliding door according to claim 1, characterized in that: The steel door leaf (1) and the steel door frame (4) are provided with sealing grooves on their respective sides, and the sealing strip (11) is embedded in the sealing groove on the steel door leaf (1) by means of sealant.

7. The improved manual steel sliding door according to claim 1, characterized in that: The steel door leaf (1) includes a frame (12), an outer panel (13), an inner panel (14), and sound insulation cotton (15). The outer panel (13) and the inner panel (14) are respectively fixedly installed on the outer walls of both sides of the frame (12), and the sound insulation cotton (15) is filled and fixed between the frame (12), the outer panel (13), and the inner panel (14).

8. The improved manual steel sliding door according to claim 7, characterized in that: The frame (12), outer panel (13) and inner panel (14) are all made of stainless steel.